Members of the Texas Itruments Widebus Family State-of-the-rt EPIC-ΙΙ icmos Design Significantly Reduces Power Dissipation Support the ME64 ETL Specification Reduced, TTL-Compatible, Input Threshold Range High-Drive Outputs (I OH = 60 m, I OL = 90 m) Support 25-Ω Incident-Wave Switching CC IS Pin Minimizes Signal Distortion During Live Iertion Internal Pullup Resistor on Keeps Outputs in High-Impedance State During Power or Power Down Distributed CC and Pin Configuration Minimizes High-Speed Switching Noise Equivalent 25-Ω Series Damping Resistor on Port us Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors Package Optio Include Plastic Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-Mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Spacings SN54TE16245, SN74TE16245 SN54TE16245... WD PCKGE SN74TE16245... DGG OR DL PCKGE (TOP IEW) 1DIR 11 21 12 22 CC 13 23 14 24 15 25 16 26 CC 17 27 18 28 2DIR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 CC IS 11 21 12 22 CC 13 23 14 24 15 25 16 26 CC 17 27 18 28 description The TE16245 devices are 16-bit (dual-octal) noninverting 3-state traceivers designed for synchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. These devices can be used as two 8-bit traceivers or one 16-bit traceiver. They allow data tramission from the bus to the bus or from the bus to the bus, depending on the logic level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so that the buses are effectively isolated. When is low, the device is active. The port has an equivalent 25-Ω series output resistor to reduce ringing. ctive bus-hold inputs are also on the port to hold unused or floating inputs at a valid logic level. The port provides for the precharging of the outputs via CC IS, which establishes a voltage between 1.3 and 1.7 when CC is not connected. The SN54TE16245 is characterized for operation over the full military temperature range of 55 C to 125 C. The SN74TE16245 is characterized for operation from 40 C to 85 C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applicatio of Texas Itruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Widebus and EPIC-ΙΙ are trademarks of Texas Itruments Incorporated. PRODUCTION DT information is current as of publication date. Products conform to specificatio per the terms of Texas Itruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE OX 655303 DLLS, TEXS 75265 Copyright 1999, Texas Itruments Incorporated On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. 1
SN54TE16245, SN74TE16245 FUNCTION TLE (each 8-bit section) INPUTS DIR OPERTION L L data to bus L H data to bus H X Isolation logic diagram (positive logic) 1DIR 1 2DIR 24 25 11 2 21 3 47 11 46 21 To Seven Other Channels To Seven Other Channels absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage range, CC.......................................................... 0.5 to 7 Input voltage range, I (except I/O ports) (see Note 1).................................. 0.5 to 7 oltage range applied to any output in the high state or power-off state, O.............. 0.5 to 5.5 Current into any output in the low state, I O.................................................. 128 m Input clamp current, I IK ( I < 0)........................................................... 18 m Output clamp current, I OK ( O < 0)........................................................ 50 m Package thermal impedance, θ J (see Note 2): DGG package............................... 89 C/W DL package................................. 94 C/W Storage temperature range, T stg................................................... 65 C to 150 C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditio beyond those indicated under recommended operating conditio is not implied. Exposure to absolute-maximum-rated conditio for extended periods may affect device reliability. NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51. 2 POST OFFICE OX 655303 DLLS, TEXS 75265
recommended operating conditio (see Note 3) SN54TE16245, SN74TE16245 SN54TE16245 SN74TE16245 MIN NOM MX MIN NOM MX CC Supply voltage 4.5 5 5.5 4.5 5 5.5 IH IL High-level input voltage Low-level input voltage 2 2 Except 1.6 1.6 0.8 0.8 Except 1.4 1.4 I Input voltage 0 CC 0 CC IOH IOL High-level output current Low-level output current bus 12 12 bus 24 60 bus 12 12 bus 64 90 t/ v Input traition rise or fall rate Outputs enabled 10 10 / T Operating free-air temperature 55 125 40 85 C NOTE 3: ll unused control inputs of the device must be held at CC or to eure proper device operation. Refer to the TI application report, Implicatio of Slow or Floating CMOS Inputs, literature number SC004. m m POST OFFICE OX 655303 DLLS, TEXS 75265 3
SN54TE16245, SN74TE16245 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PRMETER TEST CONDITIONS SN54TE16245 SN74TE16245 MIN TYP MX MIN TYP MX IK CC = 4.5, II = 18 m 1.2 1.2 OH OL II(hold) ( II port port port port port CC = 5.5, IOH = 100 µ CC 0.2 CC 0.2 CC =45 4.5 IOH = 1 m 2.4 2.4 IOH = 12 m 2 2 CC = 5.5, IOH = 1 m 4.5 4.5 CC =45 4.5 CC = 4.5 CC = 4.5 CC =45 4.5 IOH = 32 m 2.4 2.4 IOH = 64 m 2 IOL = 1 m 0.4 0.4 IOL = 12 m 0.8 IOL = 64 m 0.55 0.55 IOL = 90 m 0.9 I = 0.8 100 100 I = 2 100 100 µ CC = 5.5, I = 0 to 5.5 ±500 ±500 Control inputs CC = 5.5, I = CC or ±1 ±1 or ports CC = 5.5, I = CC or ±20 ±20 IOZH port CC = 5.5, O = 2.7 10 10 µ IOZL port CC = 5.5, O = 0.5 10 10 µ IO port port CC =55 5.5, O =25 2.5 50 120 180 50 180 25 52 90 25 90 Ioff CC = 0, I or O 4.5, CCIS = 0 ±100 ±100 µ ICC or ports Outputs high 28 36 28 36 CC = 5.5, IO = 0, Outputs low 38 48 38 48 m I = CC or Outputs disabled 20 32 20 32 orports CC = 5, high 0.02 0.02 m/ ICCD CL = 50 pf low 0.33 0.33 MHz Ci Control inputs I = 2.5 or 0.5 10 2.5 4 pf Cio I/O ports O = 2.5 or 0.5 13 4.5 8 pf ll typical values are at CC = 5, T = 25 C. The parameters IOZH and IOZL include the input leakage current. µ m 4 POST OFFICE OX 655303 DLLS, TEXS 75265
SN54TE16245, SN74TE16245 live-iertion specificatio over recommended operating free-air temperature range PRMETER ICC (CCIS) O port CC = 0 IO port CC = 0 TEST CONDITIONS CC = 0 to 4.5, CCIS = 4.5 to 5.5, IO(DC) = 0 CC = 4.5 to 5.5, CCIS = 4.5 to 5.5, IO(DC) = 0 ll typical values are at CC = 5, T = 25 C. CC 0.5 < CCIS SN54TE16245 SN74TE16245 MIN TYP MX MIN TYP MX 250 700 250 700 20 20 CCIS = 4.5 to 5.5 1.1 1.5 1.9 1.1 1.5 1.9 CCIS = 4.75 to 5.25 1.3 1.5 1.7 1.3 1.5 1.7 O = 0, CCIS = 4.5 20 100 20 100 O = 3, CCIS = 4.5 20 100 20 100 µ µ switching characteristics over recommended ranges of supply voltage and operating free-air temperature, C L = 50 pf (unless otherwise noted) (see Figure 2) PRMETER FROM (INPUT) TO (OUTPUT) CC = 5, T = 25 C SN54TE16245 SN74TE16245 MIN TYP MX MIN MX MIN MX 1.5 3.3 4.2 1.5 5.4 1.5 5.2 1.5 3.8 4.6 1.5 5.4 1.5 5.2 1.5 3 3.8 1.5 4.7 1.5 4.5 1.5 3.1 4 1.5 4.7 1.5 4.5 tpzh tpzl 2 3.9 5.3 2 6.4 2 6.2 2 4.4 5.9 2 7 2 6.8 tpzh tpzl 2 4.5 6 2 7.3 2 7.1 2 5 6.4 2 7.5 2 7.3 tphz tplz 2 4.9 5.9 2 7 2 6.7 2 3.7 4.6 2 5.4 2 5.1 tphz tplz 2 5.2 6.2 2 7.2 2 7 2 4 5 2 5.8 2 5.5 POST OFFICE OX 655303 DLLS, TEXS 75265 5
SN54TE16245, SN74TE16245 extended switching characteristics over recommended ranges of supply voltage and operating free-air temperature, C L = 50 pf (unless otherwise noted) (see Figure 2) PRMETER FROM (INPUT) TO (OUTPUT) LOD RX =13Ω Ω RX =26Ω Ω RX =56Ω Ω CC = 5, T = 25 C SN54TE16245 SN74TE16245 MIN TYP MX MIN MX MIN MX 1.5 3.2 4 1.5 5 1.5 4.8 1.5 3.8 4.7 1.5 5.8 1.5 5.6 1.5 3.1 4 1.5 4.8 1.5 4.6 1.5 3.5 4.4 1.5 5.2 1.5 4.9 1.5 3 3.8 1.5 4.7 1.5 4.5 1.5 3.3 4.2 1.5 5.1 1.5 4.7 RX = Open 0.1 0.6 2 2 tsk(p) 0.4 0.8 2 2 sk( ) RX = 26 Ω 0.3 0.8 2 2 RX = Open 0.3 0.7 1.3 1.3 tsk(o) 0.7 1.1 1.3 1.3 sk(o) RX = 26 Ω 0.5 1 1.3 1.3 tt RX = 26 Ω 0.5 0.8 1.5 0.5 1.5 0.5 1.5 tt Rise or fall time 10% 90% tt is measured between 1 and 2 of the output waveform. tt is measured between 10% and 90% of the output waveform. 3.5 5.5 7.3 3.5 8.1 3.5 7.9 extended output characteristics over recommended ranges of supply voltage and operating free-air temperature, C L = 50 pf (see Figures 1 and 2) PRMETER tsk(temp) FROM (INPUT) TO (OUTPUT) tsk(load) TEST CONDITIONS LOD SN54TE16245 SN74TE16245 MIN MX MIN MX CC = cotant, 3 2.5 T = 20 C RX = 56 Ω 4.5 4 CC = cotant, Temperature = cotant RX = 13, 26, or 56 Ω 4.5 4 6 POST OFFICE OX 655303 DLLS, TEXS 75265
SN54TE16245, SN74TE16245 PRMETER MESUREMENT INFORMTION Device 1 Y1 Y2 Device 1 Y1 Device 1 Yn 1 2 1 In Device n Yn tsk(o) tsk(load) tsk(temp) Y1 Device n Yn Y2 Yn NOTES:. Pulse skew, tsk(p), is defined as the difference in propagation delay times 1 and 1 on the same terminal at identical operating conditio.. Output skew, tsk(o), is defined as the difference in propagation delay of any two outputs of the same device switching in the same direction (e.g., 1 2 ). C. Temperature skew, tsk(temp), is the output skew of two devices, both having the same value of CC ± 1% and with package temperature differences of 20 C. D. Load skew, tsk(load), is measured with RX in Figure 2 at 13 for one unit and 56 for the other unit. Figure 1. oltage Waveforms for Extended Characteristics POST OFFICE OX 655303 DLLS, TEXS 75265 7
SN54TE16245, SN74TE16245 PRMETER MESUREMENT INFORMTION 7 S2 Open 500 Ω 3.65 SWITCHING TLE LODS / ( and port) tplz/tpzl tphz/tpzh S1 S2 Open 7 Open From Output Under Test CL = 50 pf (see Note ) S1 500 Ω RX 94 Ω 2 nf EXTENDED SWITCHING TLE LODS //tsk ( port) //tsk ( port) tt ( port) (see Note E) tt ( port) (see Note F) S1 Down Down S2 X Open X Open RX = 13, 26, or 56 Ω LOD CIRCUIT FOR OUTPUTS Output Control (low-level enabling) 1.5 1.5 3 0 tpzl tplz Input 1.5 1.5 3 0 Output Waveform 1 S2 at 7 (see Note ) 1.5 3.5 OL + 0.3 OL Output OH 1.5 1.5 OL Output Waveform 2 S2 at Open (see Note ) tpzh 1.5 tphz OH OH 0.3 0 OLTGE WEFORMS PROPGTION DELY TIMES OLTGE WEFORMS ENLE ND DISLE TIMES NOTES:. CL includes probe and jig capacitance.. Waveform 1 is for an output with internal conditio such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditio such that the output is high except when disabled by the output control. C. ll input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 Ω, tr 2.5, tf 2.5. D. The outputs are measured one at a time with one traition per measurement. E. F. tt is measured between 1 and 2 of the output waveform. tt is measured between 10% and 90% of the output waveform.figure 1 Figure 2. Load Circuit and oltage Waveforms 8 POST OFFICE OX 655303 DLLS, TEXS 75265
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